feat: automated stable releases, versioned ISOs, and Hub version badge

- Add release-stable.sh script with automatic tagging, CHANGELOG updates,
  GitHub/Gitea release creation, and VERSION file management
- Update iso/common.nix to include version from VERSION file in ISO filename
- Add VERSION file (current: 1.0.3)
- Polish OS version badge in Sovran Hub header (top-right)
- Update README.md download link to versioned ISO
- Update CHANGELOG.md with existing tags (v1.0.0 – v1.0.3)

Co-authored-by: arena-agent <297053741+arena-agent@users.noreply.github.com>

app/sovran_systemsos_web/server.py

@@ -2274,13 +2274,30 @@ async def api_logout(request: Request):
     return response
 
 
+def _get_sovran_version() -> str:
+    """Read the OS version from the VERSION file."""
+    try:
+        with open("/etc/nixos/VERSION", "r") as f:
+            return f.read().strip()
+    except FileNotFoundError:
+        try:
+            with open("VERSION", "r") as f:  # fallback for development
+                return f.read().strip()
+        except FileNotFoundError:
+            return "dev"
+    except Exception:
+        return "dev"
+
+
 @app.get("/", response_class=HTMLResponse)
 async def index(request: Request):
+    sovran_version = _get_sovran_version()
     return templates.TemplateResponse(
         request=request,
         name="index.html",
         context={
             "asset_version": ASSET_VERSION,
+            "sovran_version": sovran_version,
         },
     )
 

app/sovran_systemsos_web/static/css/header.css

@@ -45,6 +45,44 @@
   letter-spacing: 0.03em;
 }
 
+/* ── OS Version Badge (polished) ───────────────────────────────── */
+.os-version-badge {
+  display: inline-flex;
+  align-items: center;
+  background: linear-gradient(145deg, #1a2a22, #0f1a15);
+  border: 1px solid rgba(74, 222, 128, 0.25);
+  border-radius: 9999px;
+  padding: 2px 14px 2px 10px;
+  font-size: 0.75rem;
+  font-weight: 600;
+  color: #4ade80;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
+  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+  margin-left: 12px;
+  white-space: nowrap;
+}
+
+.os-version-badge:hover {
+  border-color: rgba(74, 222, 128, 0.45);
+  box-shadow: 0 4px 8px rgba(74, 222, 128, 0.15);
+  transform: translateY(-1px);
+}
+
+.os-version-badge .version-label {
+  font-size: 0.68rem;
+  font-weight: 500;
+  color: #4ade80;
+  opacity: 0.85;
+  margin-right: 2px;
+}
+
+.os-version-badge .version-number {
+  font-family: 'JetBrains Mono', 'Fira Code', monospace;
+  font-weight: 700;
+  letter-spacing: 0.5px;
+  color: #86efac;
+}
+
 /* ── IP bar ─────────────────────────────────────────────────────── */
 
 .ip-bar {

app/sovran_systemsos_web/templates/index.html

@@ -22,6 +22,13 @@
   <header class="header-bar">
     <img src="/static/sovran-hub-icon.svg" alt="Sovran Hub" class="header-logo" />
     <span class="title">Sovran_SystemsOS Hub</span>
+    
+    <!-- OS Version Badge -->
+    <span class="os-version-badge" id="os-version-badge" title="Sovran_SystemsOS Version">
+      <span class="version-label">v</span>
+      <span class="version-number" id="version-number">{{ sovran_version }}</span>
+    </span>
+
     <div class="header-buttons">
       <span class="role-badge" id="role-badge">Loading…</span>
       <button class="btn btn-header-reboot" id="btn-header-reboot" title="Restart the entire computer">Reboot</button>